男,19岁,患病一周,牙龈 * * 坏死,前牙唇侧明显,坏死形成溃疡处凹陷,表面灰白

题型:单项选择题

问题:

男,19岁,患病一周,牙龈 * * 坏死,前牙唇侧明显,坏死形成溃疡处凹陷,表面灰白色假膜,触之出血明显,口腔有腐性口臭。体温37.8℃,颏下淋巴结肿痛,既往未出现全身明显异常现象。

有辅助诊断意义的检查是

A.白细胞分类

B.脱落细胞检查

C.革兰染色涂片

D.X线片

E.组织病理

考点:口腔执业医师口腔执业医师40
题型:单项选择题

阅读理解。

     One morning a fox sees a cock in a tree. He thinks, "This is my breakfast." He comes up to the

cock and says, "My dear cock! I hear you can sing very well. Can you come down and sing for me?"

The cock is very happy. He comes down and closes his eyes and then begins to sing. The fox sees

that and catches him in his mouth quickly and carries him away.

     The people in the field see the fox. They cry "Look! Look! The fox is carrying a cock away. " The

cock says to the fox. "Mr Fox, do you understand? The people say you are carrying their cock away.

Tell them it is yours not theirs."

     The fox opens his mouth and says. "The cock is mine, not yours." Just then the cock runs away

from the fox and flies into a tree.

1. Where is the cock?

A. In the tree.  

B. On the tree.

C. In the room.

D. On the floor.

2. The fox likes ______ the cock. 

A. to talk to      

B. to know    

C. to hear the cock singing  

D. to eat

3. Which sentence is wrong?

A. The fox knows the cock.      

B. The cock closes his eyes and begins to sing. 

C. The fox catches the cock in his mouth.

D. The fox carries the cock away.

4. The fox tells the people in the field the cock is ______. 

A. theirs          

B. their        

C. his          

D. yours

5. We can think ______ is smart. 

A. the fox        

B. the cock    

C. the people    

D. the farmer

题型:单项选择题

生物兴趣小组为了调查两个河口水域的水母类动物类群(甲、乙)的种类组成及其数量特征,使用浮游生物捕捞网(网口内径50㎝,网身长145㎝,网目孔径0.169mm)各随机取样3次,调查结果如表(单位:个):

下列关于甲、乙两个类群之间物种丰富度和种群密度的比较,正确的是

[ ]

A.甲类群的丰富度大,物种2的种群密度小

B.甲类群的丰富度小,物种4的种群密度大

C.乙类群的丰富度大,物种7的种群密度小

D.乙类群的丰富度小,物种10的种群密度大

题型:单项选择题

液压支架顶梁与顶板平行支设,其最大仰角小于()。

A.5°

B.6°

C.7°

D.8°

题型:单项选择题

在某工程双代号网络计划中,工作N的最早开始时间和最迟开始时间分别为第20天和第25天,其持续时间为9天。该工作有两项紧后工作,它们的最早开始时间分别为第32天和第34天,则工作N的总时差和自由时差分别为( )天。

A.3和0

B.3和2

C.5和O

D.5和3

题型:单项选择题

对长度为n的线性表进行顺序查找,在最坏情况下需要比较的次数为( )。

A) 125
B) n/2
C) n
D) n+1

更多题库